混凝土等效单轴应变本构模型中εic计算公式的改进  

Amendment of calculating equation of ε ic in equivalent uniaxial strain stress relation of concrete

作　　者：汪基伟[1] 巫昌海[1] 岳璐璐 

机构地区：[1]河海大学土木工程学院,南京210098

出　　处：《水利水运科学研究》1999年第3期264-268,共5页

摘　　要：本文讨论了混凝土等效单轴应变本构模型中，相应于最大应力的等效单轴应变εｉｃ计算公式的不足，并根据现有的试验资料，以应力应变曲线的实验值和计算值的误差达到最小为目标，反演得到εｉｃ值，回归出新的εｉｃ计算公式，算例表明新的计算公式能得出更满意的结果。The shortcoming of existing equations for calculating ε ic which is equivalent uniaxial strain corresponding to maximum compressive stress in equivalent uniaxial strain stress relation of concrete are discussed in the paper. The values of ε ic , by which the mean error between calculating and experimental values is minimized, are obtained through trail calculation according to available experimental values, and a new regression equation for calculating ε ic is given. An example shows the new equation is reasonable than existing one.

关 键 词：混凝土 本构模型 等效单轴应变 配筋 

分 类 号：TV332[水利工程—水工结构工程]